
#include "libmediasrv_def.h"

typedef unsigned char uint8_t;

#if !defined(_RTMP_OPENSSL_)

#if defined(_RTMP_SUPPORT_)

#define RTMP_SIG_SIZE 1536

#if defined(_RTMP_SSL)


#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <limits.h>

#ifdef WIN32
	#ifdef _DEBUG
	#else
	#endif
#endif

#include "polarssl/sha256.h"
#include "polarssl/arc4.h"
#include "polarssl/dhm.h"
#include "polarssl/havege.h"

#include "dhgroups.h"

#ifndef SHA256_DIGEST_LENGTH
#define SHA256_DIGEST_LENGTH	32
#endif
#define HMAC_CTX	sha256_context
#define HMAC_setup(ctx, key, len)	sha256_hmac_starts(&ctx, (unsigned char *)key, len, 0)
#define HMAC_crunch(ctx, buf, len)	sha256_hmac_update(&ctx, buf, len)
#define HMAC_finish(ctx, dig, dlen)	dlen = SHA256_DIGEST_LENGTH; sha256_hmac_finish(&ctx, dig)

typedef arc4_context *RC4_handle;
#define RC4_alloc(h)	*h = (RC4_handle)malloc(sizeof(arc4_context))
#define RC4_setkey(h,l,k)	arc4_setup(h,k,l)
#define RC4_encrypt(h,l,d)	arc4_crypt(h,l,(unsigned char *)d,(unsigned char *)d)
#define RC4_encrypt2(h,l,s,d)	arc4_crypt(h,l,(unsigned char *)s,(unsigned char *)d)
#define RC4_free(h)	free(h)




typedef mpi *MP_t;
#define MP_new(m)	m = (MP_t)malloc(sizeof(mpi)); mpi_init((MP_t)m)
#define MP_set_w(mpi, w)	mpi_lset(mpi, w)
#define MP_cmp(u, v)	mpi_cmp_mpi(u, v)
#define MP_set(u, v)	mpi_copy(u, v)
#define MP_sub_w(mpi, w)	mpi_sub_int(mpi, mpi, w)
#define MP_cmp_1(mpi)	mpi_cmp_int(mpi, 1)
#define MP_modexp(r, y, q, p)	mpi_exp_mod(r, y, q, p, NULL)
#define MP_free(mpi)	mpi_free(mpi); free(mpi)
#define MP_gethex(u, hex, res)	MP_new(u); res = mpi_read_string(u, 16, hex) == 0
#define MP_bytes(u)	mpi_size(u)
#define MP_setbin(u,buf,len)	mpi_write_binary(u,buf,len)
#define MP_getbin(u,buf,len)	MP_new(u); mpi_read_binary(u,buf,len)

typedef unsigned int (getoff)(const UINT8 *buf,unsigned int len);


typedef struct MDH
{
	MP_t p;
	MP_t g;
	MP_t pub_key;
	MP_t priv_key;
	long length;
	dhm_context ctx;
	havege_state hs;
} MDH;

#define MDH_new()	(MDH *)calloc(1,sizeof(MDH))
#define MDH_free(vp)	{MDH *_dh = vp; dhm_free(&_dh->ctx); MP_free(_dh->p); MP_free(_dh->g); MP_free(_dh->pub_key); MP_free(_dh->priv_key); free(_dh);}

static int MDH_generate_key(MDH *dh)
{
	unsigned char out[2];
	MP_set(&dh->ctx.P,dh->p);
	MP_set(&dh->ctx.G,dh->g);
	dh->ctx.len=128;
	dhm_make_public(&dh->ctx,1024,out,1,havege_random,& (dh->hs));
	MP_new(dh->pub_key);
	MP_new(dh->priv_key);
	MP_set(dh->pub_key,&dh->ctx.GX);
	MP_set(dh->priv_key,&dh->ctx.X);
	return 1;
}

static int MDH_compute_key(uint8_t *secret,size_t len,MP_t pub,MDH *dh)
{
	MP_set(&dh->ctx.GY,pub);
	dhm_calc_secret(&dh->ctx,secret,&len , havege_random , &(dh->hs) );
	return 0;
}

/* RFC 2631, Section 2.1.5, http://www.ietf.org/rfc/rfc2631.txt */
static int isValidPublicKey(MP_t y,MP_t p,MP_t q)
{
	int ret=TRUE;
	MP_t bn;
	assert(y);

	MP_new(bn);
	assert(bn);

	/* y must lie in [2,p-1] */
	MP_set_w(bn,1);
	if(MP_cmp(y,bn)<0)
	{
		LogPrint(_LOG_LEVEL_ERROR,_TAGNAME_RTMP,"DH public key must be at least 2");
		ret=FALSE;
		goto failed;
	}

	/* bn = p-2 */
	MP_set(bn,p);
	MP_sub_w(bn,1);
	if(MP_cmp(y,bn)>0)
	{
		LogPrint(_LOG_LEVEL_ERROR,_TAGNAME_RTMP,"DH public key must be at most p-2");
		ret=FALSE;
		goto failed;
	}

	/* Verify with Sophie-Germain prime
	*
	* This is a nice test to make sure the public key position is calculated
	* correctly. This test will fail in about 50% of the cases if applied to
	* random data.
	*/
	if(q)
	{
		/* y must fulfill y^q mod p = 1 */
		MP_modexp(bn,y,q,p);

		if(MP_cmp_1(bn)!=0)
			LogPrint(_LOG_LEVEL_ERROR,_TAGNAME_RTMP,"DH public key does not fulfill y^q mod p = 1");
	}

failed:
	MP_free(bn);
	return ret;
}

static MDH* DHInit(int nKeyBits)
{
	size_t res;
	MDH *dh=MDH_new();

	if(!dh)
		goto failed;

	MP_new(dh->g);

	if(!dh->g)
		goto failed;

	MP_gethex(dh->p,P1024,res);	/* prime P1024, see dhgroups.h */
	if(!res)
		goto failed;

	MP_set_w(dh->g,2);	/* base 2 */

	dh->length=nKeyBits;
	return dh;

failed:
	if(dh)
		MDH_free(dh);

	return 0;
}

static int DHGenerateKey(MDH *dh)
{
	size_t res=0;
	if(!dh)
		return 0;

	while(!res)
	{
		MP_t q1=NULL;

		if(!MDH_generate_key(dh))
			return 0;

		MP_gethex(q1,Q1024,res);
		assert(res);

		res=isValidPublicKey(dh->pub_key,dh->p,q1);
		if(!res)
		{
			MP_free(dh->pub_key);
			MP_free(dh->priv_key);
			dh->pub_key=dh->priv_key=0;
		}

		MP_free(q1);
	}
	return 1;
}

/* fill pubkey with the public key in BIG ENDIAN order
* 00 00 00 00 00 x1 x2 x3 .....
*/

static int DHGetPublicKey(MDH *dh,uint8_t *pubkey,size_t nPubkeyLen)
{
	int len;
	if(!dh||!dh->pub_key)
		return 0;

	len=MP_bytes(dh->pub_key);
	if(len<=0||len>(int)nPubkeyLen)
		return 0;

	memset(pubkey,0,nPubkeyLen);
	MP_setbin(dh->pub_key,pubkey+(nPubkeyLen-len),len);
	return 1;
}

/* computes the shared secret key from the private MDH value and the
* other party's public key (pubkey)
*/
static int DHComputeSharedSecretKey(MDH *dh,const uint8_t *pubkey,size_t nPubkeyLen,uint8_t *secret)
{
	MP_t q1= NULL,pubkeyBn=NULL;
	size_t len;
	int res;

	if(!dh||!secret||nPubkeyLen>=INT_MAX)
		return -1;

	MP_getbin(pubkeyBn,pubkey,nPubkeyLen);
	if(!pubkeyBn)
		return -1;

	MP_gethex(q1,Q1024,len);
	assert(len);

	if(isValidPublicKey(pubkeyBn,dh->p,q1))
		res=MDH_compute_key(secret,nPubkeyLen,pubkeyBn,dh);
	else
		res= -1;

	MP_free(q1);
	MP_free(pubkeyBn);

	return res;
}

/////////////////////////////////////////////////////////////////////////////////
static const uint8_t GenuineFMSKey[]={0x47,0x65,0x6e,0x75,0x69,0x6e,0x65,0x20,0x41,0x64,0x6f,0x62,0x65,0x20,0x46,0x6c,0x61,0x73,0x68,0x20,0x4d,0x65,0x64,0x69,0x61,0x20,0x53,0x65,0x72,0x76,0x65,0x72,0x20,0x30,0x30,0x31,	/* Genuine Adobe Flash Media Server 001 */

0xf0,0xee,0xc2,0x4a,0x80,0x68,0xbe,0xe8,0x2e,0x00,0xd0,0xd1,0x02,0x9e,0x7e,0x57,0x6e,0xec,0x5d,0x2d,0x29,0x80,0x6f,0xab,0x93,0xb8,0xe6,0x36,0xcf,0xeb,0x31,0xae};				/* 68 */

static const uint8_t GenuineFPKey[]={0x47,0x65,0x6E,0x75,0x69,0x6E,0x65,0x20,0x41,0x64,0x6F,0x62,0x65,0x20,0x46,0x6C,0x61,0x73,0x68,0x20,0x50,0x6C,0x61,0x79,0x65,0x72,0x20,0x30,0x30,0x31,			/* Genuine Adobe Flash Player 001 */
0xF0,0xEE,0xC2,0x4A,0x80,0x68,0xBE,0xE8,0x2E,0x00,0xD0,0xD1,0x02,0x9E,0x7E,0x57,0x6E,0xEC,0x5D,0x2D,0x29,0x80,0x6F,0xAB,0x93,0xB8,0xE6,0x36,0xCF,0xEB,0x31,0xAE};				/* 62 */

static void InitRC4Encryption(uint8_t *secretKey,uint8_t *pubKeyIn,uint8_t *pubKeyOut,RC4_handle *rc4keyIn,RC4_handle *rc4keyOut)
{
	uint8_t digest[SHA256_DIGEST_LENGTH];
	unsigned int digestLen=0;
	HMAC_CTX ctx;

	RC4_alloc(rc4keyIn);
	RC4_alloc(rc4keyOut);

	HMAC_setup(ctx,secretKey,128);
	HMAC_crunch(ctx,pubKeyIn,128);
	HMAC_finish(ctx,digest,digestLen);



	RC4_setkey(*rc4keyOut,16,digest);

	HMAC_setup(ctx,secretKey,128);
	HMAC_crunch(ctx,pubKeyOut,128);
	HMAC_finish(ctx,digest,digestLen);


	RC4_setkey(*rc4keyIn,16,digest);
}



static unsigned int GetDHOffset2(const uint8_t *handshake,unsigned int len)
{
	unsigned int offset=0;
	const uint8_t *ptr=handshake+768;
	unsigned int res;


	offset+=(*ptr);
	ptr++;
	offset+=(*ptr);
	ptr++;
	offset+=(*ptr);
	ptr++;
	offset+=(*ptr);

	res=(offset%632)+8;

	if(res+128>767)
	{
		LogPrint(_LOG_LEVEL_ERROR,_TAGNAME_RTMP,"%s: Couldn't calculate correct DH offset (got %d), exiting!\n",__FUNCTION__,res);
	
	}
	return res;
}

static unsigned int GetDigestOffset2(const uint8_t *handshake,unsigned int len)
{
	unsigned int offset=0;
	const uint8_t *ptr=handshake+772;
	unsigned int res;

	offset+=(*ptr);
	ptr++;
	offset+=(*ptr);
	ptr++;
	offset+=(*ptr);
	ptr++;
	offset+=(*ptr);

	res=(offset%728)+776;

	if(res+32>1535)
	{
		LogPrint(_LOG_LEVEL_DEBUG,_TAGNAME_RTMP,"%s: Couldn't calculate correct digest offset (got %d), exiting \n",__FUNCTION__,res);
	}
	return res;
}

static unsigned int GetDHOffset1(const uint8_t *handshake,unsigned int len)
{
	unsigned int offset=0;
	const uint8_t *ptr=handshake+1532;
	unsigned int res;



	offset+=(*ptr);
	ptr++;
	offset+=(*ptr);
	ptr++;
	offset+=(*ptr);
	ptr++;
	offset+=(*ptr);

	res=(offset%632)+772;

	if(res+128>1531)
	{
        LogPrint( _LOG_LEVEL_DEBUG, _TAGNAME_RTMP, "%s: Couldn't calculate DH offset (got %d), exiting!\n", __FUNCTION__, res );
	}

	return res;
}

static unsigned int GetDigestOffset1(const uint8_t *handshake,unsigned int len)
{
	unsigned int offset=0;
	const uint8_t *ptr=handshake+8;
	unsigned int res;



	offset+=(*ptr);
	ptr++;
	offset+=(*ptr);
	ptr++;
	offset+=(*ptr);
	ptr++;
	offset+=(*ptr);

	res=(offset%728)+12;

	if(res+32>771)
	{
        LogPrint( _LOG_LEVEL_DEBUG, _TAGNAME_RTMP, "%s: Couldn't calculate digest offset (got %d), exiting!", __FUNCTION__, res );
	}

	return res;
}



static void HMACsha256(const uint8_t *message,size_t messageLen,const uint8_t *key,size_t keylen,uint8_t *digest)
{
	unsigned int digestLen;
	HMAC_CTX ctx;

	HMAC_setup(ctx,key,keylen);
	HMAC_crunch(ctx,message,messageLen);
	HMAC_finish(ctx,digest,digestLen);


}

static void CalculateDigest(unsigned int digestPos,const uint8_t *handshakeMessage,const uint8_t *key,size_t keyLen,uint8_t *digest)
{
	const int messageLen=RTMP_SIG_SIZE-SHA256_DIGEST_LENGTH;
	uint8_t message[RTMP_SIG_SIZE-SHA256_DIGEST_LENGTH];

	memcpy(message,handshakeMessage,digestPos);
	memcpy(message+digestPos,&handshakeMessage[digestPos+SHA256_DIGEST_LENGTH],messageLen-digestPos);

	HMACsha256(message,messageLen,key,keyLen,digest);
}

static int VerifyDigest(unsigned int digestPos,const uint8_t *handshakeMessage,const uint8_t *key,size_t keyLen)
{
	uint8_t calcDigest[SHA256_DIGEST_LENGTH];

	CalculateDigest(digestPos,handshakeMessage,key,keyLen,calcDigest);

	return memcmp(&handshakeMessage[digestPos],calcDigest,SHA256_DIGEST_LENGTH)==0;
}


/* handshake
*
* Type		= [1 bytes] plain: 0x03, encrypted: 0x06, 0x08, 0x09
* -------------------------------------------------------------------- [1536 bytes]
* Uptime	= [4 bytes] big endian unsigned number, uptime
* Version 	= [4 bytes] each byte represents a version number, e.g. 9.0.124.0
* ...
*
*/

static const uint32_t rtmpe8_keys[16][4]={{0xbff034b2, 0x11d9081f, 0xccdfb795, 0x748de732},{0x086a5eb6, 0x1743090e, 0x6ef05ab8, 0xfe5a39e2},{0x7b10956f, 0x76ce0521, 0x2388a73a, 0x440149a1},{0xa943f317, 0xebf11bb2, 0xa691a5ee, 0x17f36339},{0x7a30e00a, 0xb529e22c, 0xa087aea5, 0xc0cb79ac},{0xbdce0c23, 0x2febdeff, 0x1cfaae16, 0x1123239d},{0x55dd3f7b, 0x77e7e62e, 0x9bb8c499, 0xc9481ee4},{0x407bb6b4, 0x71e89136, 0xa7aebf55, 0xca33b839},{0xfcf6bdc3, 0xb63c3697, 0x7ce4f825, 0x04d959b2},{0x28e091fd, 0x41954c4c, 0x7fb7db00, 0xe3a066f8},{0x57845b76, 0x4f251b03, 0x46d45bcd, 0xa2c30d29},{0x0acceef8, 0xda55b546, 0x03473452, 0x5863713b},{0xb82075dc, 0xa75f1fee, 0xd84268e8, 0xa72a44cc},{0x07cf6e9e, 0xa16d7b25, 0x9fa7ae6c, 0xd92f5629},{0xfeb1eae4, 0x8c8c3ce1, 0x4e0064a7, 0x6a387c2a},{0x893a9427, 0xcc3013a2, 0xf106385b, 0xa829f927}};

/* RTMPE type 8 uses XTEA on the regular signature
* http://en.wikipedia.org/wiki/XTEA
*/
static void
rtmpe8_sig(uint8_t *in,uint8_t *out,int keyid)
{
	unsigned int i, num_rounds=32;
	uint32_t v0,v1,sum=0,delta=0x9E3779B9;
	uint32_t const*k;

	v0=in[0]|(in[1]<<8)|(in[2]<<16)|(in[3]<<24);
	v1=in[4]|(in[5]<<8)|(in[6]<<16)|(in[7]<<24);
	k=rtmpe8_keys[keyid];

	for(i=0;i<num_rounds;i++)
	{
		v0+=(((v1<<4)^(v1>>5))+v1)^(sum+k[sum&3]);
		sum+=delta;
		v1+=(((v0<<4)^(v0>>5))+v0)^(sum+k[(sum>>11)&3]);
	}

	out[0]=v0; v0>>=8;
	out[1]=v0; v0>>=8;
	out[2]=v0; v0>>=8;
	out[3]=v0;

	out[4]=v1; v1>>=8;
	out[5]=v1; v1>>=8;
	out[6]=v1; v1>>=8;
	out[7]=v1;
}

/* RTMPE type 9 uses Blowfish on the regular signature
* http://en.wikipedia.org/wiki/Blowfish_(cipher)
*/
#define	BF_ROUNDS	16
typedef struct bf_key
{
	uint32_t s[4][256];
	uint32_t p[BF_ROUNDS+2];
} bf_key;

static const uint32_t bf_sinit[][256]={/* S-Box 0 */
	{ 0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96,
	0xba7c9045, 0xf12c7f99, 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
	0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e, 0x0d95748f, 0x728eb658,
	0x718bcd58, 0x82154aee, 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
	0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, 0x8e79dcb0, 0x603a180e,
	0x6c9e0e8b, 0xb01e8a3e, 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
	0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440, 0x55ca396a, 0x2aab10b6,
	0xb4cc5c34, 0x1141e8ce, 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
	0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e, 0xafd6ba33, 0x6c24cf5c,
	0x7a325381, 0x28958677, 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
	0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032, 0xef845d5d, 0xe98575b1,
	0xdc262302, 0xeb651b88, 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
	0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, 0x21c66842, 0xf6e96c9a,
	0x670c9c61, 0xabd388f0, 0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
	0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98, 0xa1f1651d, 0x39af0176,
	0x66ca593e, 0x82430e88, 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
	0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6, 0x4ed3aa62, 0x363f7706,
	0x1bfedf72, 0x429b023d, 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
	0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7, 0xe3fe501a, 0xb6794c3b,
	0x976ce0bd, 0x04c006ba, 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
	0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 0x6dfc511f, 0x9b30952c,
	0xcc814544, 0xaf5ebd09, 0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
	0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb, 0x5579c0bd, 0x1a60320a,
	0xd6a100c6, 0x402c7279, 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
	0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, 0x323db5fa, 0xfd238760,
	0x53317b48, 0x3e00df82, 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
	0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573, 0x695b27b0, 0xbbca58c8,
	0xe1ffa35d, 0xb8f011a0, 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
	0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790, 0xe1ddf2da, 0xa4cb7e33,
	0x62fb1341, 0xcee4c6e8, 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
	0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0, 0xd08ed1d0, 0xafc725e0,
	0x8e3c5b2f, 0x8e7594b7, 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
	0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, 0x2f2f2218, 0xbe0e1777,
	0xea752dfe, 0x8b021fa1, 0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
	0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9, 0x165fa266, 0x80957705,
	0x93cc7314, 0x211a1477, 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
	0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49, 0x00250e2d, 0x2071b35e,
	0x226800bb, 0x57b8e0af, 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
	0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5, 0x83260376, 0x6295cfa9,
	0x11c81968, 0x4e734a41, 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
	0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, 0x08ba6fb5, 0x571be91f,
	0xf296ec6b, 0x2a0dd915, 0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
	0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a, },

	/* S-Box 1 */
	{ 0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 0xad6ea6b0, 0x49a7df7d,
	0x9cee60b8, 0x8fedb266, 0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
	0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e, 0x3f54989a, 0x5b429d65,
	0x6b8fe4d6, 0x99f73fd6, 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
	0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, 0x09686b3f, 0x3ebaefc9,
	0x3c971814, 0x6b6a70a1, 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
	0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8, 0xb03ada37, 0xf0500c0d,
	0xf01c1f04, 0x0200b3ff, 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
	0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701, 0x3ae5e581, 0x37c2dadc,
	0xc8b57634, 0x9af3dda7, 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
	0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331, 0x4e548b38, 0x4f6db908,
	0x6f420d03, 0xf60a04bf, 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
	0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 0x5512721f, 0x2e6b7124,
	0x501adde6, 0x9f84cd87, 0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
	0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2, 0xef1c1847, 0x3215d908,
	0xdd433b37, 0x24c2ba16, 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
	0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, 0x043556f1, 0xd7a3c76b,
	0x3c11183b, 0x5924a509, 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
	0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3, 0x771fe71c, 0x4e3d06fa,
	0x2965dcb9, 0x99e71d0f, 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
	0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 0xf2f74ea7, 0x361d2b3d,
	0x1939260f, 0x19c27960, 0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
	0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28, 0xc332ddef, 0xbe6c5aa5,
	0x65582185, 0x68ab9802, 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
	0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 0x13cca830, 0xeb61bd96,
	0x0334fe1e, 0xaa0363cf, 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
	0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e, 0x648b1eaf, 0x19bdf0ca,
	0xa02369b9, 0x655abb50, 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
	0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8, 0xf837889a, 0x97e32d77,
	0x11ed935f, 0x16681281, 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
	0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696, 0xcdb30aeb, 0x532e3054,
	0x8fd948e4, 0x6dbc3128, 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
	0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 0x45eee2b6, 0xa3aaabea,
	0xdb6c4f15, 0xfacb4fd0, 0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
	0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250, 0xcf62a1f2, 0x5b8d2646,
	0xfc8883a0, 0xc1c7b6a3, 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
	0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, 0x58428d2a, 0x0c55f5ea,
	0x1dadf43e, 0x233f7061, 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
	0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e, 0xa6078084, 0x19f8509e,
	0xe8efd855, 0x61d99735, 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
	0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, 0xdb73dbd3, 0x105588cd,
	0x675fda79, 0xe3674340, 0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
	0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7, },

	/* S-Box 2 */
	{ 0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 0x411520f7, 0x7602d4f7,
	0xbcf46b2e, 0xd4a20068, 0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
	0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840, 0x4d95fc1d, 0x96b591af,
	0x70f4ddd3, 0x66a02f45, 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
	0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, 0x28507825, 0x530429f4,
	0x0a2c86da, 0xe9b66dfb, 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
	0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6, 0xaace1e7c, 0xd3375fec,
	0xce78a399, 0x406b2a42, 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
	0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2, 0x3a6efa74, 0xdd5b4332,
	0x6841e7f7, 0xca7820fb, 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
	0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b, 0x55a867bc, 0xa1159a58,
	0xcca92963, 0x99e1db33, 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
	0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3, 0x95c11548, 0xe4c66d22,
	0x48c1133f, 0xc70f86dc, 0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
	0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564, 0x257b7834, 0x602a9c60,
	0xdff8e8a3, 0x1f636c1b, 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
	0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922, 0x85b2a20e, 0xe6ba0d99,
	0xde720c8c, 0x2da2f728, 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
	0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e, 0x0a476341, 0x992eff74,
	0x3a6f6eab, 0xf4f8fd37, 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
	0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, 0xf1290dc7, 0xcc00ffa3,
	0xb5390f92, 0x690fed0b, 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
	0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb, 0x37392eb3, 0xcc115979,
	0x8026e297, 0xf42e312d, 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
	0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350, 0x1a6b1018, 0x11caedfa,
	0x3d25bdd8, 0xe2e1c3c9, 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
	0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe, 0x9dbc8057, 0xf0f7c086,
	0x60787bf8, 0x6003604d, 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
	0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f, 0x77a057be, 0xbde8ae24,
	0x55464299, 0xbf582e61, 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
	0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9, 0x7aeb2661, 0x8b1ddf84,
	0x846a0e79, 0x915f95e2, 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
	0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, 0xb77f19b6, 0xe0a9dc09,
	0x662d09a1, 0xc4324633, 0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
	0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169, 0xdcb7da83, 0x573906fe,
	0xa1e2ce9b, 0x4fcd7f52, 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
	0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5, 0xf0177a28, 0xc0f586e0,
	0x006058aa, 0x30dc7d62, 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
	0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76, 0x6f05e409, 0x4b7c0188,
	0x39720a3d, 0x7c927c24, 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
	0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, 0x1e50ef5e, 0xb161e6f8,
	0xa28514d9, 0x6c51133c, 0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
	0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0, },

	/* S-Box 3 */
	{ 0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 0x5cb0679e, 0x4fa33742,
	0xd3822740, 0x99bc9bbe, 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
	0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4, 0x5748ab2f, 0xbc946e79,
	0xc6a376d2, 0x6549c2c8, 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
	0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 0xa1fad5f0, 0x6a2d519a,
	0x63ef8ce2, 0x9a86ee22, 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
	0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6, 0x2826a2f9, 0xa73a3ae1,
	0x4ba99586, 0xef5562e9, 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
	0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593, 0xe990fd5a, 0x9e34d797,
	0x2cf0b7d9, 0x022b8b51, 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
	0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c, 0xe029ac71, 0xe019a5e6,
	0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
	0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 0x15056dd4, 0x88f46dba,
	0x03a16125, 0x0564f0bd, 0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
	0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319, 0x7533d928, 0xb155fdf5,
	0x03563482, 0x8aba3cbb, 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
	0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, 0xea7a90c2, 0xfb3e7bce,
	0x5121ce64, 0x774fbe32, 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
	0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166, 0xb39a460a, 0x6445c0dd,
	0x586cdecf, 0x1c20c8ae, 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
	0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 0x72eacea8, 0xfa6484bb,
	0x8d6612ae, 0xbf3c6f47, 0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
	0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d, 0x4040cb08, 0x4eb4e2cc,
	0x34d2466a, 0x0115af84, 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
	0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, 0x611560b1, 0xe7933fdc,
	0xbb3a792b, 0x344525bd, 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
	0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7, 0x1a908749, 0xd44fbd9a,
	0xd0dadecb, 0xd50ada38, 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
	0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c, 0xbf97222c, 0x15e6fc2a,
	0x0f91fc71, 0x9b941525, 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
	0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442, 0xe0ec6e0e, 0x1698db3b,
	0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
	0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 0xdf359f8d, 0x9b992f2e,
	0xe60b6f47, 0x0fe3f11d, 0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
	0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299, 0xf523f357, 0xa6327623,
	0x93a83531, 0x56cccd02, 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
	0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, 0xe6c6c7bd, 0x327a140a,
	0x45e1d006, 0xc3f27b9a, 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
	0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b, 0x53113ec0, 0x1640e3d3,
	0x38abbd60, 0x2547adf0, 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
	0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 0x1948c25c, 0x02fb8a8c,
	0x01c36ae4, 0xd6ebe1f9, 0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
	0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6, },};

	static const uint32_t bf_pinit[]={/* P-Box */
		0x243f6a88,0x85a308d3,0x13198a2e,0x03707344,0xa4093822,0x299f31d0,0x082efa98,0xec4e6c89,0x452821e6,0x38d01377,0xbe5466cf,0x34e90c6c,0xc0ac29b7,0xc97c50dd,0x3f84d5b5,0xb5470917,0x9216d5d9,0x8979fb1b,};

#define KEYBYTES	24

		static const unsigned char rtmpe9_keys[16][KEYBYTES]={{ 0x79, 0x34, 0x77, 0x4c, 0x67, 0xd1, 0x38, 0x3a, 0xdf, 0xb3, 0x56, 0xbe,
			0x8b, 0x7b, 0xd0, 0x24, 0x38, 0xe0, 0x73, 0x58, 0x41, 0x5d, 0x69, 0x67, },{ 0x46, 0xf6, 0xb4, 0xcc, 0x01, 0x93, 0xe3, 0xa1, 0x9e, 0x7d, 0x3c, 0x65,
			0x55, 0x86, 0xfd, 0x09, 0x8f, 0xf7, 0xb3, 0xc4, 0x6f, 0x41, 0xca, 0x5c, },{ 0x1a, 0xe7, 0xe2, 0xf3, 0xf9, 0x14, 0x79, 0x94, 0xc0, 0xd3, 0x97, 0x43,
			0x08, 0x7b, 0xb3, 0x84, 0x43, 0x2f, 0x9d, 0x84, 0x3f, 0x21, 0x01, 0x9b, },{ 0xd3, 0xe3, 0x54, 0xb0, 0xf7, 0x1d, 0xf6, 0x2b, 0x5a, 0x43, 0x4d, 0x04,
			0x83, 0x64, 0x3e, 0x0d, 0x59, 0x2f, 0x61, 0xcb, 0xb1, 0x6a, 0x59, 0x0d, },{ 0xc8, 0xc1, 0xe9, 0xb8, 0x16, 0x56, 0x99, 0x21, 0x7b, 0x5b, 0x36, 0xb7,
			0xb5, 0x9b, 0xdf, 0x06, 0x49, 0x2c, 0x97, 0xf5, 0x95, 0x48, 0x85, 0x7e, },{ 0xeb, 0xe5, 0xe6, 0x2e, 0xa4, 0xba, 0xd4, 0x2c, 0xf2, 0x16, 0xe0, 0x8f,
			0x66, 0x23, 0xa9, 0x43, 0x41, 0xce, 0x38, 0x14, 0x84, 0x95, 0x00, 0x53, },{ 0x66, 0xdb, 0x90, 0xf0, 0x3b, 0x4f, 0xf5, 0x6f, 0xe4, 0x9c, 0x20, 0x89,
			0x35, 0x5e, 0xd2, 0xb2, 0xc3, 0x9e, 0x9f, 0x7f, 0x63, 0xb2, 0x28, 0x81, },{ 0xbb, 0x20, 0xac, 0xed, 0x2a, 0x04, 0x6a, 0x19, 0x94, 0x98, 0x9b, 0xc8,
			0xff, 0xcd, 0x93, 0xef, 0xc6, 0x0d, 0x56, 0xa7, 0xeb, 0x13, 0xd9, 0x30, },{ 0xbc, 0xf2, 0x43, 0x82, 0x09, 0x40, 0x8a, 0x87, 0x25, 0x43, 0x6d, 0xe6,
			0xbb, 0xa4, 0xb9, 0x44, 0x58, 0x3f, 0x21, 0x7c, 0x99, 0xbb, 0x3f, 0x24, },{ 0xec, 0x1a, 0xaa, 0xcd, 0xce, 0xbd, 0x53, 0x11, 0xd2, 0xfb, 0x83, 0xb6,
			0xc3, 0xba, 0xab, 0x4f, 0x62, 0x79, 0xe8, 0x65, 0xa9, 0x92, 0x28, 0x76, },{ 0xc6, 0x0c, 0x30, 0x03, 0x91, 0x18, 0x2d, 0x7b, 0x79, 0xda, 0xe1, 0xd5,
			0x64, 0x77, 0x9a, 0x12, 0xc5, 0xb1, 0xd7, 0x91, 0x4f, 0x96, 0x4c, 0xa3, },{ 0xd7, 0x7c, 0x2a, 0xbf, 0xa6, 0xe7, 0x85, 0x7c, 0x45, 0xad, 0xff, 0x12,
			0x94, 0xd8, 0xde, 0xa4, 0x5c, 0x3d, 0x79, 0xa4, 0x44, 0x02, 0x5d, 0x22, },{ 0x16, 0x19, 0x0d, 0x81, 0x6a, 0x4c, 0xc7, 0xf8, 0xb8, 0xf9, 0x4e, 0xcd,
			0x2c, 0x9e, 0x90, 0x84, 0xb2, 0x08, 0x25, 0x60, 0xe1, 0x1e, 0xae, 0x18, },{ 0xe9, 0x7c, 0x58, 0x26, 0x1b, 0x51, 0x9e, 0x49, 0x82, 0x60, 0x61, 0xfc,
			0xa0, 0xa0, 0x1b, 0xcd, 0xf5, 0x05, 0xd6, 0xa6, 0x6d, 0x07, 0x88, 0xa3, },{ 0x2b, 0x97, 0x11, 0x8b, 0xd9, 0x4e, 0xd9, 0xdf, 0x20, 0xe3, 0x9c, 0x10,
			0xe6, 0xa1, 0x35, 0x21, 0x11, 0xf9, 0x13, 0x0d, 0x0b, 0x24, 0x65, 0xb2, },{ 0x53, 0x6a, 0x4c, 0x54, 0xac, 0x8b, 0x9b, 0xb8, 0x97, 0x29, 0xfc, 0x60,
			0x2c, 0x5b, 0x3a, 0x85, 0x68, 0xb5, 0xaa, 0x6a, 0x44, 0xcd, 0x3f, 0xa7, },};

#define	BF_ENC(X,S) \
	(((S[0][X>>24] + S[1][X>>16 & 0xff]) ^ S[2][(X>>8) & 0xff]) + S[3][X & 0xff])

		static void
			bf_enc(uint32_t *x,bf_key *key)
		{
			uint32_t Xl;
			uint32_t Xr;
			uint32_t temp;
			int i;

			Xl=x[0];
			Xr=x[1];

			for(i=0;i<BF_ROUNDS;++i)
			{
				Xl^=key->p[i];
				Xr^=BF_ENC(Xl,key->s);

				temp=Xl;
				Xl=Xr;
				Xr=temp;
			}

			Xl^=key->p[BF_ROUNDS];
			Xr^=key->p[BF_ROUNDS+1];

			x[0]=Xr;
			x[1]=Xl;
		}

		static void
			bf_setkey(const unsigned char *kp,int keybytes,bf_key *key)
		{
			int i;
			int j;
			int k;
			uint32_t data;
			uint32_t d[2];

			memcpy(key->p,bf_pinit,sizeof(key->p));
			memcpy(key->s,bf_sinit,sizeof(key->s));

			j=0;
			for(i=0;i<BF_ROUNDS+2;++i)
			{
				data=0x00000000;
				for(k=0;k<4;++k)
				{
					data=(data<<8)|kp[j];
					j=j+1;
					if(j>=keybytes)
						j=0;
				}
				key->p[i]^=data;
			}

			d[0]=0x00000000;
			d[1]=0x00000000;

			for(i=0;i<BF_ROUNDS+2;i+=2)
			{
				bf_enc(d,key);

				key->p[i]=d[0];
				key->p[i+1]=d[1];
			}

			for(i=0;i<4;++i)
				for(j=0;j<256;j+=2)
				{
					bf_enc(d,key);

					key->s[i][j]=d[0];
					key->s[i][j+1]=d[1];
				}
		}

		static void
			rtmpe9_sig(uint8_t *in,uint8_t *out,int keyid)
		{
			uint32_t d[2];
			bf_key key;

			bf_setkey(rtmpe9_keys[keyid],KEYBYTES,&key);

			/* input is little-endian */
			d[0]=in[0]|(in[1]<<8)|(in[2]<<16)|(in[3]<<24);
			d[1]=in[4]|(in[5]<<8)|(in[6]<<16)|(in[7]<<24);
			bf_enc(d,&key);
			out[0]=d[0]&0xff;
			out[1]=(d[0]>>8)&0xff;
			out[2]=(d[0]>>16)&0xff;
			out[3]=(d[0]>>24)&0xff;
			out[4]=d[1]&0xff;
			out[5]=(d[1]>>8)&0xff;
			out[6]=(d[1]>>16)&0xff;
			out[7]=(d[1]>>24)&0xff;
		}

////////////////////////////////////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////////////////////////////////

typedef struct tagRTMPServerSig
{
	UINT8 serversig[RTMP_SIG_SIZE] ;
	int   dhposServer ;
	int   digestPosServer ;

}RTMPServerSig;
static getoff *digoff[]={GetDigestOffset1,GetDigestOffset2};
static getoff *dhoff[]={GetDHOffset1,GetDHOffset2};

static MDH* _dh = NULL ;
static RTMPServerSig _serversig;
static RTMPServerSig _serversigEncrypted;


class  CRTMPEncrypt :
	public CObj 
{

public:
	_CPP_UTIL_DYNAMIC(CRTMPEncrypt) ;
	_CPP_UTIL_CLASSNAME(CRTMPEncrypt) ;
	_CPP_UTIL_QUERYOBJ(CObj) ;
	CRTMPEncrypt()
	{
		dhposServer = 0 ;
		digestPosServer = 0 ;

		rc4keyIn = NULL ;
		rc4keyOut = NULL ;
	}
	~CRTMPEncrypt()
	{
		if( rc4keyIn != NULL )
		{
			RC4_free( rc4keyIn );
			rc4keyIn = NULL ;
		}

		if( rc4keyOut != NULL )
		{
			RC4_free( rc4keyOut );
			rc4keyOut = NULL ;
		}

	}
	void Copy( const RTMPServerSig * srvSig)
	{
		dhposServer = srvSig->dhposServer ;
		digestPosServer = srvSig->digestPosServer ;
		memcpy(  serversig , srvSig->serversig , sizeof(serversig) );
	}
public:
	UINT8 serversig[RTMP_SIG_SIZE] ;
	int   dhposServer ;
	int   digestPosServer ;
	void *rc4keyIn;
	void *rc4keyOut;
};


void CRTMPNetworkSrv::InitHandshake()
{
	static BOOL  _bInitHandshake = FALSE ;
	if( _bInitHandshake )
	{
		return ;
	}
	_bInitHandshake = TRUE ;

	_serversig.dhposServer = 0 ;
	_serversig.digestPosServer = 0 ;
	_serversigEncrypted.digestPosServer = 0 ;
	_serversigEncrypted.digestPosServer = 0 ;


	getoff *getdh= NULL,*getdig=NULL;
	int offalg = 0;
	UINT8 *serversig = _serversig.serversig ;


	
	
	int i = 0 ;
	UINT32 upTime = htonl((UINT32)OSTickCount());
	memcpy(serversig, &upTime, 4);
	serversig[4]=3;
	serversig[5]=5;
	serversig[6]=1;
	serversig[7]=1;
	for (i = 8; i < RTMP_SIG_SIZE; i++)
	{
		srand( upTime + i );
		serversig[i] = (UINT8)(rand() % 256);
	}

	_dh = DHInit(1024) ;
	if( _dh == NULL )
	{
		LogPrint(_LOG_LEVEL_ERROR ,_TAGNAME_RTMP ,"%s:%d DHInit failed\n" , __FUNCTION__ , __LINE__ );
		return ;
	}
	havege_init( & (_dh->hs) );

	/****************************** encrypted **************************************/
	memcpy( _serversigEncrypted.serversig ,  _serversig.serversig , sizeof(_serversigEncrypted.serversig ) );
	serversig = _serversigEncrypted.serversig  ;



	offalg = 1 ;
	getdig=digoff[offalg];
	getdh=dhoff[offalg];

	_serversigEncrypted.dhposServer=getdh(serversig,RTMP_SIG_SIZE);
	//LogPrint(_LOG_LEVEL_DETAIL ,_TAGNAME_RTMP ,"%s:%d DH pubkey position: %d\n" , __FUNCTION__ , __LINE__ , _serversigEncrypted.dhposServer );

	if( !DHGenerateKey( _dh ) )
	{
		LogPrint(_LOG_LEVEL_ERROR ,_TAGNAME_RTMP ,"%s:%d Couldn't generate Diffie-Hellmann public key!\n" , __FUNCTION__ , __LINE__ );
		return ;
	}

	if(!DHGetPublicKey( _dh ,(uint8_t*)&serversig[_serversigEncrypted.dhposServer],128))
	{
		LogPrint(_LOG_LEVEL_ERROR ,_TAGNAME_RTMP ,"%s:%d Couldn't write public key!\n" , __FUNCTION__ , __LINE__ );
		return ;
	}

	_serversigEncrypted.digestPosServer=getdig(serversig,RTMP_SIG_SIZE);	/* reuse this value in verification */
	//LogPrint(_LOG_LEVEL_DETAIL ,_TAGNAME_RTMP ,"%s:%d Server digest offset: %d\n",__FUNCTION__, __LINE__ , _serversigEncrypted.digestPosServer);

	CalculateDigest(_serversigEncrypted.digestPosServer,serversig,GenuineFMSKey,36,&serversig[_serversigEncrypted.digestPosServer]);

	/****************************** encrypted end**************************************/

	offalg = 0 ;
	getdig=digoff[offalg];
	getdh=dhoff[offalg];
	serversig = _serversig.serversig ;

	_serversig.digestPosServer=getdig(serversig,RTMP_SIG_SIZE);	/* reuse this value in verification */
	//LogPrint(_LOG_LEVEL_DETAIL ,_TAGNAME_RTMP ,"%s:%d Server digest offset: %d\n",__FUNCTION__, __LINE__ , _serversig.digestPosServer);

	CalculateDigest(_serversig.digestPosServer,serversig,GenuineFMSKey,36,&serversig[_serversig.digestPosServer]);


	

}
int CRTMPNetworkSrv::OnReceivedHandshake1(CRTMPConnContext *pContext ,const unsigned char * data, int length)
{
	if( pContext->m_ctxRtmp == NULL )
	{
		LogPrint(_LOG_LEVEL_ERROR, _TAGNAME_RTMP, "%s: m_ctxRtmp == NULL\n", __FUNCTION__);
		return -1 ;
	}
	CRTMPState *state = & ( pContext->m_ctxRtmp->m_state );

	UINT8 type = data[ 0 ]  ;
	BOOL  encrypted = FALSE ;
	BOOL FP9HandShake = FALSE ;
	int offalg = 0;
	int i = 0 ;
	RC4_handle keyIn = 0;
	RC4_handle keyOut = 0;
	getoff *getdh= NULL,*getdig=NULL;
	CRTMPEncrypt *obEnc = NULL ;






	UINT8 * clientsig = (UINT8 *)data + 1 ;

	/* decode client response */
	UINT32 upTimeClt = 0 ;
	UINT8  verClt[4];
	memcpy(&upTimeClt, clientsig, 4);
	upTimeClt = ntohl(upTimeClt);
	memcpy(verClt, clientsig + 4 , 4);


	if( type == 3 )
	{
		encrypted = FALSE;
	}
	else if( type == 6||type == 8 )
	{
		offalg=1;
		encrypted=TRUE;
		FP9HandShake=TRUE;
		//r->Link.protocol|=RTMP_FEATURE_ENC;
		/* use FP10 if client is capable */
		if( clientsig[4]==128 )
		{
			type = 8;
		}
	}
	else
	{
		LogPrint( _LOG_LEVEL_ERROR,_TAGNAME_RTMP,"%s: Unknown version %02x\n",__FUNCTION__,type);
		return -1;
	}


	if( !FP9HandShake && clientsig[4] )
	{
		FP9HandShake = TRUE;
	}

	state->m_handshake.m_bF9 = FP9HandShake ;
	state->m_handshake.m_type = type ;
	state->m_handshake.m_bEncrypted = encrypted ;



	if( !FP9HandShake )
	{
		return CRTMPNetAsync::OnReceivedHandshake1(pContext, data, length);
	}

	getdig = digoff[offalg];
	getdh = dhoff[offalg];

	if( encrypted )
	{

		obEnc = CRTMPEncrypt::CreateObj();
		if( obEnc == NULL )
		{
			LogPrint(_LOG_LEVEL_ERROR, _TAGNAME_RTMP, "%s: failed CRTMPEncrypt::CreateObj\n", __FUNCTION__);
			return -1;
		}

		if( pContext->m_objEncrypt != NULL )
		{
			pContext->m_objEncrypt->ReleaseObj() ;
		}
		pContext->m_objEncrypt = obEnc ;
		obEnc->Copy( &_serversigEncrypted );

	}




	uint8_t digestResp[SHA256_DIGEST_LENGTH];
	uint8_t *signatureResp=NULL;

	/* we have to use this signature now to find the correct algorithms for getting the digest and DH positions */
	int digestPosClient=getdig(clientsig,RTMP_SIG_SIZE);

	if(!VerifyDigest(digestPosClient,clientsig,GenuineFPKey,30))
	{
		//LogPrint(_LOG_LEVEL_WARNING, _TAGNAME_RTMP,"Trying different position for client digest!\n ");
		offalg^=1;
		getdig=digoff[offalg];
		getdh=dhoff[offalg];

		digestPosClient=getdig(clientsig,RTMP_SIG_SIZE);

		if(!VerifyDigest(digestPosClient,clientsig,GenuineFPKey,30))
		{
		//	LogPrint(_LOG_LEVEL_ERROR, _TAGNAME_RTMP,"Couldn't verify the client digest\n");	/* continuing anyway will probably fail */
		//	return -1;
		}
	}


	/* do Diffie-Hellmann Key exchange for encrypted RTMP */
	if(encrypted)
	{
		int dhposClient,len;
		/* compute secret key */
		uint8_t secretKey[128]={0};

		dhposClient=getdh(clientsig,RTMP_SIG_SIZE);
        LogPrint( _LOG_LEVEL_DEBUG, _TAGNAME_RTMP, "%s: Client DH public key offset: %d\n", __FUNCTION__, dhposClient );
		len=DHComputeSharedSecretKey(_dh,(uint8_t*)&clientsig[dhposClient],128,secretKey);
		if(len<0)
		{
            LogPrint( _LOG_LEVEL_DEBUG, _TAGNAME_RTMP, "%s: Wrong secret key position!\n", __FUNCTION__ );
			return -1;
		}

		InitRC4Encryption(secretKey,(uint8_t*)&clientsig[dhposClient],(uint8_t*)& (obEnc->serversig[obEnc->dhposServer]) ,&keyIn,&keyOut);
		if( obEnc != NULL )
		{
			obEnc->rc4keyIn = keyIn ;
			obEnc->rc4keyOut = keyOut ;
		}
	}

	/* calculate response now */
	signatureResp=clientsig+RTMP_SIG_SIZE-SHA256_DIGEST_LENGTH;

	HMACsha256(&clientsig[digestPosClient],SHA256_DIGEST_LENGTH,GenuineFMSKey,sizeof(GenuineFMSKey),digestResp);
	HMACsha256(clientsig,RTMP_SIG_SIZE-SHA256_DIGEST_LENGTH,digestResp,SHA256_DIGEST_LENGTH,signatureResp);

	if(type==8)
	{
		uint8_t *dptr=digestResp;
		uint8_t *sig=signatureResp;
		/* encrypt signatureResp */
		for(i=0;i<SHA256_DIGEST_LENGTH;i+=8)
			rtmpe8_sig(sig+i,sig+i,dptr[i]%15);
	}
	else if(type==9)
	{
		uint8_t *dptr=digestResp;
		uint8_t *sig=signatureResp;
		/* encrypt signatureResp */
		for(i=0;i<SHA256_DIGEST_LENGTH;i+=8)
			rtmpe9_sig(sig+i,sig+i,dptr[i]%15);
	}


	CObjNetIOBufferDynamic *ioBuf = CObjNetIOBufferDynamic::CreateObj( RTMP_SIG_SIZE * 2 + 1 , SIZE_1KB );
	if( ioBuf == NULL )
	{
		LogPrint(_LOG_LEVEL_ERROR, _TAGNAME_RTMP, "%s:%d failed CObjNetIOBufferDynamic::CreateObj\n", __FUNCTION__, __LINE__);
		return -1 ;
	}
	ioBuf->m_pBuf[ 0 ] = state->m_handshake.m_type ;

	if( encrypted )
	{
		memcpy( ioBuf->m_pBuf+1, _serversigEncrypted.serversig , RTMP_SIG_SIZE );
	}
	else
	{
		memcpy( ioBuf->m_pBuf+1, _serversig.serversig , RTMP_SIG_SIZE );
	}
	
	memcpy( ioBuf->m_pBuf + RTMP_SIG_SIZE + 1 , clientsig , RTMP_SIG_SIZE  );
	ioBuf->m_nDataLen = RTMP_SIG_SIZE * 2 + 1 ;


	if( pContext->m_type == CRTMPCtx::ConnTypeRTMPT  )
	{
		CObjNetIOBuffer *ioHeader =  pContext->SendHttpContentLength( ioBuf->m_nDataLen + 1 ) ;
		if( ioHeader == NULL )
		{
			ioBuf->ReleaseObj();
			LogPrint(_LOG_LEVEL_ERROR, _TAGNAME_RTMP, "%s:%d failed CreateObj SendHttpContentLength\n", __FUNCTION__, __LINE__);
			return -1 ;
		}
		ioHeader->m_pBuf[ ioHeader->m_nDataLen ] = 1 ;
		ioHeader->m_nDataLen ++ ;

		if( !pContext->SendIoBuffer ( ioHeader )  )
		{
			ioHeader->ReleaseObj();
			ioBuf->ReleaseObj();
			LogPrint(_LOG_LEVEL_ERROR, _TAGNAME_RTMP, "%s:%d failed SendIoBuffer\n", __FUNCTION__, __LINE__);
			return -1 ;
		}

		pContext->DecHttpRequests();
	}

	if( !pContext->SendIoBuffer ( ioBuf )  )
	{
		ioBuf->ReleaseObj();
		LogPrint(_LOG_LEVEL_ERROR, _TAGNAME_RTMP, "%s:%d failed SendIoBuffer\n", __FUNCTION__, __LINE__);
		return -1 ;
	}




	return 0 ;

	
}
int CRTMPNetworkSrv::OnReceivedHandshake2(CRTMPConnContext *pContext ,const unsigned char * data, int length)
{
	if( pContext->m_ctxRtmp == NULL )
	{
		LogPrint(_LOG_LEVEL_ERROR, _TAGNAME_RTMP, "%s: m_ctxRtmp == NULL\n", __FUNCTION__);
		return -1 ;
	}
	CRTMPState *state = & ( pContext->m_ctxRtmp->m_state );

	if( !state->m_handshake.m_bF9 )
	{
		return 0;// CRTMPNetAsync::OnReceivedHandshake2(pContext, data, length);
	}


	CRTMPEncrypt *obEnc = NULL ;
	UINT8 *serversig = NULL ;
	int   dhposServer = 0  ;
	int   digestPosServer = 0 ;

	if( state->m_handshake.m_bEncrypted )
	{
		obEnc = (CRTMPEncrypt *) pContext->m_objEncrypt ;
		if( obEnc == NULL )
		{
			LogPrint(_LOG_LEVEL_ERROR, _TAGNAME_RTMP, "%s: m_objEncrypt == NULL\n", __FUNCTION__);
			return -1 ;
		}
		serversig = obEnc->serversig ;
		dhposServer = obEnc->dhposServer ;
		digestPosServer = obEnc->digestPosServer ;

		//serversig = _serversigEncrypted.serversig ;
		//dhposServer = _serversigEncrypted.dhposServer ;
		//digestPosServer = _serversigEncrypted.digestPosServer ;
	}
	else
	{
		serversig = _serversig.serversig ;
		dhposServer = _serversig.dhposServer ;
		digestPosServer = _serversig.digestPosServer ;
	}

	UINT8 * clientsig = (UINT8 *)data  ;
	int i = 0 ;
	UINT8 signature[SHA256_DIGEST_LENGTH];
	UINT8 digest[SHA256_DIGEST_LENGTH];
	UINT8 type = state->m_handshake.m_type ;

    LogPrint( _LOG_LEVEL_DEBUG, _TAGNAME_RTMP, "%s: Client sent signature\n", __FUNCTION__ );


	/* verify client response */
	HMACsha256(&serversig[digestPosServer],SHA256_DIGEST_LENGTH,GenuineFPKey,sizeof(GenuineFPKey),digest);
	HMACsha256(clientsig,RTMP_SIG_SIZE-SHA256_DIGEST_LENGTH,digest,SHA256_DIGEST_LENGTH,signature);

	if(type==8)
	{
		uint8_t *dptr=digest;
		uint8_t *sig=signature;
		/* encrypt signatureResp */
		for(i=0;i<SHA256_DIGEST_LENGTH;i+=8)
			rtmpe8_sig(sig+i,sig+i,dptr[i]%15);
	}
	else if(type==9)
	{
		uint8_t *dptr=digest;
		uint8_t *sig=signature;
		/* encrypt signatureResp */
		for(i=0;i<SHA256_DIGEST_LENGTH;i+=8)
			rtmpe9_sig(sig+i,sig+i,dptr[i]%15);
	}


	/* show some information */

	if(memcmp(signature,&clientsig[RTMP_SIG_SIZE-SHA256_DIGEST_LENGTH],SHA256_DIGEST_LENGTH)!=0)
	{
		LogPrint(_LOG_LEVEL_DEBUG, _TAGNAME_RTMP, "%s: Client not genuine Adobe!\n", __FUNCTION__);
		//return -1;
	}
	else
	{
        LogPrint( _LOG_LEVEL_DEBUG, _TAGNAME_RTMP, "%s: Genuine Adobe Flash Player\n", __FUNCTION__ );
	}

	if( state->m_handshake.m_bEncrypted )
	{
		char buff[RTMP_SIG_SIZE];
		if( obEnc->rc4keyIn != NULL )
		{
			RC4_encrypt( (arc4_context *)obEnc->rc4keyIn ,RTMP_SIG_SIZE,(uint8_t*)buff);
		}

		if( obEnc->rc4keyOut != NULL )
		{
			RC4_encrypt( (arc4_context *)obEnc->rc4keyOut ,RTMP_SIG_SIZE,(uint8_t*)buff);
		}
	}

	return 0 ;
	
}
#else

int CRTMPNetworkSrv::OnReceivedHandshake1(CRTMPConnContext *pContext ,const unsigned char * data, int length)
{
	return CRTMPNetAsync::OnReceivedHandshake1( pContext , data ,  length ) ;
}
int CRTMPNetworkSrv::OnReceivedHandshake2(CRTMPConnContext *pContext ,const unsigned char * data, int length)
{
	return 0 ;
	//return CRTMPNetAsync::OnReceivedHandshake2( pContext , data ,  length ) ;
}
void CRTMPNetworkSrv::InitHandshake()
{
}

#endif


#endif


#endif









































